Almost perfect!
This is awesome psytrance!
The only problem I have with pretty much the whole song is the bass. The basslines are amazingly creative (seriously I wish I could approach that level of trancy creativity) but the sound of the actual bass (synth settings, sample, what have you) sounded a little cheesy.
But still, the percussion is genuinely fantastic. I haven't heard any drums of that caliber on Newgrounds since I joined!